/*
 * Created on Jan 30, 2004
 * Created by Alon Rohter
 * Copyright (C) 2004, 2005, 2006 Alon Rohter, All Rights Reserved.
 * 
 * Copyright (C) Azureus Software, Inc, All Rights Reserved.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 */
package org.gudy.azureus2.core3.util;

public abstract class DirectByteBufferPool {
    // According to reports (from the http://mina.apache.org folks), hotspot vms actually
    // work better with non-direct (heap) buffers for network and disk io these days.

    private static final DirectByteBufferPool impl;

    static {
        if (System.getProperty("use.heap.buffers") != null) {

            // impl = new DirectByteBufferPoolHeap();

            Debug.outNoStack("******** USE_HEAP_BUFFERS MODE DEPRECATED ********");
        }

        impl = new DirectByteBufferPoolReal();
    }

    public static DirectByteBuffer getBuffer(byte allocator, int length) {
        return (impl.getBufferSupport(allocator, length));
    }

    protected abstract DirectByteBuffer getBufferSupport(byte allocator, int length);

    protected abstract void returnBufferSupport(DirectByteBuffer buffer);
}
